A perfect plunge pool with a fun design. This is the perfect place to cool off after a hit tub, sauna, or intense work out. soaking in the cool water, and looking out over the water in the distance. The indoor pool seems to be closed, but the advantage of the indoor pool is that the water is not soiled by leaves or other debris that is easily blown away by the wind. In addition, the indoor swimming pool ensures that you can swim at any time without worrying about direct sunlight.